Cotton-chopper.



PATENTED AUG. 21', 1906.

N. MABRY. COTTON CHOPPER.

APPLICATION FILED MAY 2,1906.

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NARVELL MABRY, MERIDIAN, MISSISSIPPI.

COTTON-CHOPPER.

Specification of Letters Patent.

Patented Aug. 21, 1906.

Application filed May 2.1906. Serial No. 314,824.

To all whom it may concern.-

Beit known that I, NARVELL MABRY, a citizen of the United States ofAmerica, residing at Meridian, in the county of Lauderdale and State ofMississippi, have invented certain new anduseful Improvements inGotton-Choppers, of which the following is a specification.

This invention relates to new and useful improvements incotton-choppers, and more particularly to that class known asvertically-revolving choppers.

It is an object of this invention to provide novel means whereby thestroke of the blades may be regulated. It is also an object of thisinvention to provide in a device of this,

kind novel means for supporting the machine.

Finally, an object of this invention is to produce a device of thecharacter noted possessing advantages in points of efficiency,

simplicity, and durability, proving at the same time comparativelyinexpensive to manufacture.

With the foregoing and other objects in View the invention consists inthe details of construction and the arrangement and combination of partsto be hereinafter more fully set forth and claimed.

In describing the invention in detail refer ence will be had to theaccompanying drawings, forming part of this specification, wherein likecharacters denote corresponding parts in the several views, in whichFigure 1 is a top plan view of the invention. Fig. 2 is a similar viewwith a portion broken away and illustrating a modified arrange ment.Fig. 3 is ,a view in perspective, illustrating the means for securingthe chopperblades employed in the invention to their hub, the partsbeing detached.

In the drawings, 1 and 2 indicate the side pieces of the machine.Journaled near the front end of the machine is the shaft 3, extendingtransversely of the machine and projecting beyond the side pieces 1 and2. On the portion of the shaft exterior of the frame are mounted theground-wheels 4. The side pieces 1 and 2 are connected near the oppositerear ends by the cross-strip 5. This cross-strip comprises a flat stripof metal bent at opposite ends to form flangesT, through which thesecuring-bolts 8 pass to hold said cross-strip to the side pieces. Thecrossstrip 5 intermediate its ends is doubled longitudinally upon itselfand has a central aperture 9. Adjacent the shaft or axle 3 is positioneda second cross-strip 10, which is similar in construction to thecross-strip 5. The central aperture 6 of this cross-strip 10 is inalinement with the aperture of the crossstrip 5. Mounted within theapertures 9 and 6 are the ends of the longitudinal shaft 11, one end ofsaid shaft projecting beyond the cross-strip 10. Mounted on thisextended portion of the shaft is a gear-wheel 12, which meshes with andderives its movement from a gear-wheel 13, fixed on the shaft 3. Thus itcan be seen that the rotation of the ground-wheels 4 and the shaft 3will cause the longitudinal shaft 10 to operate.

Adjacent to but a slight distance from the cross-piece 5 is a hub 14,which rotates with said shaft. Carried by the hub are the curvedchopper-knives 15, these knives com.- prising in their construction ashank portion 16 and awidened knife portion 17 on their free ends.

In order that the chopper-knives may have an unobstructed movement, theside pieces 1 and 2 adjacent the chopper-knives are offset or extended,as at 18. It is the intention of the invention to adjust thechopper-knives one with relation to the other, and this is accomplishedby forming the hub 14 with a peripheral groove 19, in which move theblocks 20, to which the shanks of the cutter-blades are attached-that isto say, each shank carries one of these blocks. Set-screws 21 passthrough the hub and engage these blocks and hold them in their variousadjustments. By this means the stroke of the blades can be regulated.

Depending from the rear of the side pieces are the spring-arms 22, whichhave their lower ends bifurcated. Journaled within the bifurcated endsof the arms are the rollers 23. The spring-arms are adapted tocompensate for the uneven condition of the ground and holds the machinein a normal position. Extending upward from the side pieces 1 and 2 arethe handles 24, which may be of any ordinary or preferred construction.Carried by the side pieces 1 and 2 in advance of the cutter-blades arethe plows 25, the purpose of which is thought to be clearly apparent.Suitable means are employed at the front end of the machine for hitchingthe draft-team.

As shown in Fig. 2, a harrow 27 is substituted in lieu of the plows 25,this harrow being secured to the side pieces in any suitable manner thatWill meet the requirements of practice.

Having fully described my invention, What I claim as new, and desire tosecure by Letters Patent, is

In combination, a frame, a shaft carried thereby, means for rotating theshaft, a hub on the shaft, said hub having a peripheral groove,chopper-knives, blocks on the chopper-knives having angular peripheries,said peripheries engaging. the bottom of the groove of the hub, andmeans for holding the blocks Within the groove.

2. In combination, a frame, a shaft carried thereby, means for rotatingthe shaft, a hub on the shaft, said hub having a peripheral groove,chopper-knives, blocks on the chopper-knives fitting Within the grooveof the hub, said blocks engaging the base of the groove to hold saidknives against displacement, and means for holding the blocks againstmovement Within the groove.-

In testimony whereof I aflix my signature, in the presence of twoWitnesses, this 16th day of April, 1906.

NARVELL MABRY.

Witnesses:

J. R. TEMPLE, R. S. MOORE.

